Air-starter and relief valve.



CLAUDE RORABECY., E DAYTON, OHG.

AHB-STBTEE AND RELIEF VALVE.

Speoication of Letters Patent.

Fateiited July 8, will Application filed December 23, 1912. Serial No. 733,132.5.

To all whom it may concern.

Be it known that l, CLAUDE Romanen,

citizen of the United States, residing aty others skilled in the art to which it appertains to malte and use the saine, reference being had to the accompanying drawings, and to the let-ters and figures of re erence niarlted thereon, which form a part of this specification.

rl`his invention relates to an improved air starter and relief valve for oil or gas engines.

rlhe object of the invention is to utilize the pocket space in the head of an engine cylinder to a minimum extent, and to tproduce a compact forni of valve of the a ove type. In other words, to provide means for obtaining in a single valve organism the relief of compression in starting and the injection of compressed air for starting. This involves a structural organism such as is illustrated in the accompanying drawings, with more or less modifications.

Referring to said drawings, Fi ure 1 is a sectional view of m combined air starting and relief valve; Fig. 2 is a sectional view showin the valve opened to its full extent, thus aliowinr the compressed air to enter the cylinder i'br starting; Fig. 8 is a similar view showin the valve in a neutral position; Fig. 4 is a similar view showing the valve in a compression-relief osition; Fig. 5 is a view of the cam, one ot the elements through which the valve is operated; Fig. 6 is a sectional view of said cam; Fig. 7 is a diagram showiny the approximate relation of the valve with the piston of the engine; Fig. 8 is a section on the line e--e of Fig. 3.

ln a detailed description of the invention, similar reference characters indicate corresponding parts.

The puppet valve 1 is held to its seat in valve cage 2 by a sprinc 3 which surrounds the stem 4 of said valve in the upper portion of the valve housing. The said valve 1v is opened by the valve lever 5 which is timed with the cani 6 on cam shaft 7 with the engine. rlie relief ports 8 in the valve body or cage communicate with the relief port 9 in the cylinder head 10 and said ports are directly controlled by a piston valve il mounted upon the stem 4 of the valve 1. The compressed air ports 1Q in the valve body or cage communicate with a compressed air port 13 in the cylinder head 10. This port 13 in turn communicates with a coin ressed air pipe or line 14 which extends to tie source of supply. The compressed air ports 12 are controlled by a piston valve 15 which is similar to the valve 1l and, like the valve 11, is attached to the common stem 4. The relief piston valve 11 and the compressed air piston valve 15 are so placed on the valve stem 4 that they time properly with the relief ports 8 and the compressed air ports 12 and are properly timed with the valve lever 5 and the cam 6.

Fi 2 illustrates the puppet valve 1 in a position to allow the compressed air through lports 12 to enter the engine cylinder and the timing of said valve is approximately shown at a in Fig. 7, and the rise of the cam G is shown at a in Fig. 5. ln Fig. 3, the valve 1 is in a neutral position, as before stated, in which the air relief ports S are closed by the piston valve 11 and the compressed air ports 12 are closed by the iston valve 15. The timing is shown at o in Fig. 7 and at Z) of the cam in Fig. 5. in Fig. 4, the valve 1 is in the position of relieving the compression, which position is indicated at c in thc diaram in Fig. 7 and on the cam at o in Fig. 5. he position of the valve 1 in Fig. 1 illustrates the valve closed, for example, when not in operation. The ports 8 are closed just before the ports l2 are opened. The cam 6 at point 16 is concentric with the cani shaft 7 and when said cam is shifted so that the point 16 is in line with the antifriction roller 17 of the valve connecting rod 18, the valve 1 is permitted to remain closed, as in Fig. 1. l" hen the engine is ruiming on its fuel, the valve l remains closed owincf to the valve rod 18 and roller 17 being on the port-ion 16 of the cam 6.

Having described my invention, I claim:

1. ln a valve of the type specified, the combination with the head of an engine cylinder having a relief passage and a compressed air passage therein, of a valve housing mounted in said cylinder head having ports communicating with said relief passage and compressed air )tissage in said cylinder head, a puppet va ve controllinc the admission of compressed air to the cylinder of the engine and the relief, piston valves mounted in said vulve housing and controlling the relief ports und Compressed air ports thereof which coinniunicte i'vitli the relief passage und compressed air passage in the cylinder head, said puppet valve und piston inlies being mounted upon a common stein, substuntiully :is specified.

2. In u vulve of the type specified, the combination with the head of an engine cylinder having :i relief Fussnge und a compressed air inlet, port, o a puppet valve controlling the admission of xiii` to the'engine cylinder, u piston vulve controlling relief ports conimunicnting with the relief pas- 'timed with sage in the cylinder head, trolling ports ooniiiiunicating with the coni- 'pe'ssed airJ pzissiigo in the Cylinder head, :i common stein to which said puppet and piston valves nre connected, und means coniprising a (Cain und connecting rod suitnbly the engine for operating said valves.

In testimony whereof I ailix iiiy signature` in presence of two Witnesses.

' CLAUDE RORBEUK. Witnesses:

R. J. MoCAR'iy, MATTHEW SisnLizn.

Copies of this patent may be obtained for 've cents each,`by addresng the Commissioner of Patents, Washington, D. C.

a piston valve con- 

